// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef V8_OBJECTS_JS_ARRAY_INL_H_
#define V8_OBJECTS_JS_ARRAY_INL_H_

#include "src/objects/js-array.h"

#include "src/objects-inl.h" // Needed for write barriers

// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"

namespace v8 {
namespace internal {

    OBJECT_CONSTRUCTORS_IMPL(JSArray, JSObject)
    OBJECT_CONSTRUCTORS_IMPL(JSArrayIterator, JSObject)

    CAST_ACCESSOR(JSArray)
    CAST_ACCESSOR(JSArrayIterator)

    ACCESSORS(JSArray, length, Object, kLengthOffset)

    void JSArray::set_length(Smi length)
    {
        // Don't need a write barrier for a Smi.
        set_length(Object(length.ptr()), SKIP_WRITE_BARRIER);
    }

    bool JSArray::SetLengthWouldNormalize(Heap* heap, uint32_t new_length)
    {
        return new_length > kMaxFastArrayLength;
    }

    bool JSArray::AllowsSetLength()
    {
        bool result = elements()->IsFixedArray() || elements()->IsFixedDoubleArray();
        DCHECK(result == !HasFixedTypedArrayElements());
        return result;
    }

    void JSArray::SetContent(Handle<JSArray> array,
        Handle<FixedArrayBase> storage)
    {
        EnsureCanContainElements(array, storage, storage->length(),
            ALLOW_COPIED_DOUBLE_ELEMENTS);

        DCHECK(
            (storage->map() == array->GetReadOnlyRoots().fixed_double_array_map() && IsDoubleElementsKind(array->GetElementsKind())) || ((storage->map() != array->GetReadOnlyRoots().fixed_double_array_map()) && (IsObjectElementsKind(array->GetElementsKind()) || (IsSmiElementsKind(array->GetElementsKind()) && Handle<FixedArray>::cast(storage)->ContainsOnlySmisOrHoles()))));
        array->set_elements(*storage);
        array->set_length(Smi::FromInt(storage->length()));
    }

    bool JSArray::HasArrayPrototype(Isolate* isolate)
    {
        return map()->prototype() == *isolate->initial_array_prototype();
    }

    ACCESSORS(JSArrayIterator, iterated_object, Object, kIteratedObjectOffset)
    ACCESSORS(JSArrayIterator, next_index, Object, kNextIndexOffset)

    IterationKind JSArrayIterator::kind() const
    {
        return static_cast<IterationKind>(
            Smi::cast(READ_FIELD(*this, kKindOffset))->value());
    }

    void JSArrayIterator::set_kind(IterationKind kind)
    {
        WRITE_FIELD(*this, kKindOffset, Smi::FromInt(static_cast<int>(kind)));
    }

} // namespace internal
} // namespace v8

#include "src/objects/object-macros-undef.h"

#endif // V8_OBJECTS_JS_ARRAY_INL_H_
